Synlogic Ownership | Who Owns Synlogic?
Synlogic Ownership Summary
Synlogic is owned by 3.51% institutional investors, 21.40% insiders, and 75.09% retail investors. Cable car capital is the largest institutional shareholder, holding 26.89% of SYBX shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 1.19% of its assets in Synlogic shares.
SYBX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Synlogic | 3.51% | 21.40% | 75.09% |
| Sector | Healthcare Stocks | 231.98% | 10.74% | -142.72% |
| Industry | Biotech Stocks | 381.47% | 10.55% | -292.02% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Cable car capital | 3.31M | 26.89% | $5.52M |
| Nea management company | 2.92M | 23.73% | $4.88M |
| Vanguard group | 201.06K | 1.63% | $225.19K |
| Renaissance | 85.63K | 0.70% | $95.90K |
| Geode capital management | 71.64K | 0.58% | $80.25K |
| Drw securities | 24.36K | 0.20% | $27.29K |
| Ikarian capital | 20.42K | 0.17% | $34.51K |
| Blackrock funding, inc. /de | 19.76K | 0.16% | $22.13K |
| Northern trust | 19.47K | 0.16% | $32.47K |
| Jane street group | 15.00K | 0.12% | $16.80K |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Cable car capital | 3.31M | 2.37% | $5.52M |
| Nea management company | 2.92M | 0.27% | $4.88M |
| Ikarian capital | 20.42K | 0.00% | $34.51K |
| Xtx topco | 11.17K | 0.00% | $18.88K |
| Drw securities | 24.36K | 0.00% | $27.29K |
| Renaissance | 85.63K | 0.00% | $95.90K |
| Flagship harbor advisors | 1.03K | 0.00% | $1.16K |
| Northern trust | 19.47K | - | $32.47K |
| Jane street group | 15.00K | - | $16.80K |
| Barclays | - | - | - |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Renaissance | 85.63K | 0.00% | 46.12K |
| Drw securities | 24.36K | 0.00% | 24.36K |
| Northern trust | 19.47K | - | 19.47K |
| Jane street group | 15.00K | - | 15.00K |
| Xtx topco | 11.17K | 0.00% | 11.17K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fmr | 5.32K | - | -160.68K |
| Fiduciary trust | - | - | -22.35K |
| Abg innovation capital partners iii gp | - | - | -13.73K |
| Rangeley capital | - | - | -13.60K |
| Wells fargo & company/mn | - | - | -5.00 |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Drw securities | 24.36K | 0.00% | 24.36K | $27.29K |
| Northern trust | 19.47K | - | 19.47K | $32.47K |
| Jane street group | 15.00K | - | 15.00K | $16.80K |
| Xtx topco | 11.17K | 0.00% | 11.17K | $18.88K |
| Ubs group | 2.53K | - | 2.53K | $2.83K |
Sold Out
| Holder | Change |
|---|---|
| Barclays | -1.00 |
| Wells fargo & company/mn | -5.00 |
| Rangeley capital | -13.60K |
| Abg innovation capital partners iii gp | -13.73K |
| Fiduciary trust | -22.35K |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 16 | -30.43% | 432,435 | -93.50% | 3 | 0.12% | 7 | -30.00% | - | -100.00% |
| Sep 30, 2025 | 23 | 27.78% | 6,655,293 | -1.72% | 54 | 1.78% | 11 | 57.14% | 4 | 33.33% |
| Jun 30, 2025 | 18 | 12.50% | 6,771,874 | 95.25% | 55 | 6.92% | 7 | 75.00% | 3 | - |
| Mar 31, 2025 | 17 | - | 6,780,518 | 0.24% | 55 | 1.79% | 4 | 33.33% | 3 | 50.00% |
| Dec 31, 2024 | 17 | 6.25% | 6,764,147 | -0.91% | 55 | 1.78% | 3 | 50.00% | 2 | -50.00% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 139.45K | 1.19% | - |
| Vanguard Total Stock Mkt Idx Inv | 136.47K | 1.17% | -2.98K |
| Fidelity VIP Growth Initial | 76.83K | 0.66% | - |
| Fidelity Capital Appreciation | 61.29K | 0.52% | - |
| Fidelity Advisor Equity Growth I | 43.12K | 0.37% | - |
| Fidelity Extended Market Index | 40.42K | 0.35% | 3.98K |
| Vanguard Institutional Extnd Mkt Idx Tr | 32.28K | 0.28% | -10.20K |
| Fidelity Growth Discovery | 29.26K | 0.25% | - |
| NT Ext Equity Mkt Idx Fd - NL | 16.59K | 0.14% | - |
| NT Ext Equity Mkt Idx Fd - DC - NL - T2 | 13.07K | 0.11% | 98.00 |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Oct 29, 2025 | Dooley Mary Beth | See Remarks below | Sell | $284.17 |
| Apr 02, 2025 | Dooley Mary Beth | See Remarks below | Sell | $172.80 |
| Feb 03, 2025 | Dooley Mary Beth | See Remarks below | Sell | $2.80K |
| Oct 29, 2024 | Dooley Mary Beth | Head of Finance | Sell | $110.60 |
| Apr 02, 2024 | Dooley Mary Beth | Head of Finance | Sell | $325.24 |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q4 | - | 1 |
| 2025 Q2 | - | 1 |
| 2025 Q1 | - | 1 |
| 2024 Q4 | - | 1 |
| 2024 Q2 | - | 2 |
SYBX Ownership FAQ
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